viscous fan - how it works + options
Posted: Thu Sep 10, 2020 3:50 am
I noticed the fan blade (red) on my 80 528i auto had a noticeable wobble after I had removed and cleaned it up. It seems that the centre aluminium fixing plate has buckled a bit - not sure if I did that whilst cleaning or its part of the original viscous fan bolt tension, which I released when I disassembled the fan from the viscous clutch.
I have another fan (black) and clutch - off a 78', but its bearing seems to be stuck
So I have a good viscous clutch with a slightly buckeled fan and a good fan with a stuck viscous clutch bearing.
So my question is - Does a slight fan wobble matter?
If I remove the black fan from its viscous clutch - will it buckle.
In looking this up, I found a viscous fan explanation on youtube by a E38/e31 guy. - very interesting how it works
https://www.youtube.com/watch?v=RDuGsDUiXQw
He explains quite well the interaction of the thermostat - which I didnt know.
I read a previous thread about getting the updated viscous clutch - that allows the fan to be removed without having to remove the radiator.
FCP Euro have 2 listed
https://www.fcpeuro.com/products/bmw-fa ... 1521723027 @ 64.77
https://www.fcpeuro.com/products/bmw-fa ... 1521723027 @ 61.10
I read that these need a different mounting or pulley - where can they be got?
I have another fan (black) and clutch - off a 78', but its bearing seems to be stuck
So I have a good viscous clutch with a slightly buckeled fan and a good fan with a stuck viscous clutch bearing.
So my question is - Does a slight fan wobble matter?
If I remove the black fan from its viscous clutch - will it buckle.
In looking this up, I found a viscous fan explanation on youtube by a E38/e31 guy. - very interesting how it works
https://www.youtube.com/watch?v=RDuGsDUiXQw
He explains quite well the interaction of the thermostat - which I didnt know.
I read a previous thread about getting the updated viscous clutch - that allows the fan to be removed without having to remove the radiator.
FCP Euro have 2 listed
https://www.fcpeuro.com/products/bmw-fa ... 1521723027 @ 64.77
https://www.fcpeuro.com/products/bmw-fa ... 1521723027 @ 61.10
I read that these need a different mounting or pulley - where can they be got?